Skip to Content
MilliporeSigma
All Photos(1)

Key Documents

View All Documentation

541206

Sigma-Aldrich

Potassium niobate

Synonym(s):

Niobium potassium oxide (KNbO3 ), Potassium metaniobate, Potassium niobium trioxide

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
KNbO3
CAS Number:
12030-85-2
Molecular Weight:
180.00
EC Number:
234-744-4
MDL number:
MFCD00049651
UNSPSC Code:
12352300
PubChem Substance ID:
24878525
NACRES:
NA.23

form

powder

SMILES string

[K+].[O-][Nb](=O)=O

InChI

1S/K.Nb.3O/q+1;;;;-1

InChI key

UKDIAJWKFXFVFG-UHFFFAOYSA-N

General description

Potassium niobate (KNbO3, KN) is a perovskite-type well-known ferroelectric material with a wide range of applications in electromechanical, nonlinear optical, frequency doubler, and holographic storage system applications. Single crystal of a KNbO3 is known to have high piezoelectric activity because of its high electromechanical coupling factors. Therefore KN materials have received much interest in the development of lead-free piezoelectric materials.[1][2][3]

Application

Potassium niobate can be used to prepare bismuth sodium titanate(BNT)-KN ceramics (BNT–KN ceramics) by the mixed oxide method. The addition of KN to the BNT system increases the dielectric and piezoelectric properties of the BNT-KN ceramics. These properties of the ceramic system are suitable for the development of lead-free capacitors.[2] Cu dopped KNbO3 single crystals also found application in semiconductor laser technology because Cu doping resulted in electronic states with near-infrared absorption bands.[3]

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKBZ3579V
MKBX5318V
MKBP9322V
MKBJ9133V
06411EH

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Phase formation and electrical properties of lead-free bismuth sodium titanate-potassium niobate ceramics
Pengpat K, et al.
Current Applied Physics, 8(3-4), 241-245 (2008)
Seungwook Kim et al.
Journal of the American Chemical Society, 135(1), 6-9 (2012-12-14)
We report the synthesis of KNbO(3) nanowires (NWs) with a monoclinic phase, a phase not observed in bulk KNbO(3) materials. The monoclinic NWs can be synthesized via a hydrothermal method using metallic Nb as a precursor. The NWs are metastable
Defect structure of copper doped potassium niobate ceramics
Eruenal E, et al.
Functional Materials Letters, 3(01), 19-24 (2010)
Evangelia Zdrali et al.
The Journal of chemical physics, 150(20), 204704-204704 (2019-06-04)
In this work, we provide a comparison between the stability and the interfacial structure of micrometer-sized and nanometer-sized droplets by employing a multi-instrumental approach comprised of the surface-sensitive technique of sum frequency scattering as well as dynamic light scattering and
Teruyuki Nakato et al.
ACS applied materials & interfaces, 4(8), 4338-4347 (2012-08-02)
We investigated emulsions stabilized with particles of layered hexaniobate, known as a semiconductor photocatalyst, and photocatalytic degradation of dyes in the emulsions. Hydrophobicity of the niobate particles was adjusted with the intercalation of alkylammonium ions into the interlayer spaces to
View All Related Papers

Articles

Kinetic Energy Harvesting by Magnetostrictive Materials

A significant limiting factor for wearable electronics and wireless sensors is the finite amount of energy that can be stored in on-board batteries.

Energy Harvesting Using Lead Zirconium Titanate-Based Ceramic Nanowires

Among various ceramics, one-dimensional (1-D) piezoelectric ceramics have attracted significant scientific attention for use in energy harvesting.

Questions

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service